Gravel screening and washing machine.



C. P. BIESANZ. GRAVEL SCREENING AND WASHING MACHINE.

APPLICATION FILED .IAN. 2h I9I5. I

Patented Jun 1 1915.

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C. P. BIESANZ. GRAVEL SCREENING AND WASHING MACHINE.

APPLICATION FILED JAN. 21. 19I5.

Patented June 1, 1915.

THE NORkIS PETERI (20., PHOTO-LITHQ. WASHINGTON. D. C

C. P. BIESANZ. GRAVEE SCREENING AND WASHING MACHINE.

APPLICATION FILED JAN. 21, I915.

Patented J 11116 1, 1915.

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CHARLES P. BIESANZ, 0F WINONA, MINNESOTA, ASSIGNOR T0 BIESANZ STONECOMPANY, OF WINONA, MINNESOTA, A CORPORATION OF MINNESOTA.

GRAVEL SCREENING AND WASHING MACHINE.

Application filed January 21, 1915.

To all whom it may 0011061 11:

Be it known that I, CHARLES P. BIESANZ, a citizen of the United States,residing at WVinona, in the county of Winona and State of Minnesota,have invented certain new and useful Improvements in Gravel Screeningand lVashing Machines, of which the following is a specification.

This invention relates to a machine for screening and washing gravel,sand, stone, coal, coke or the like, and has for its primary object theprovisions of a plant or machine adapted to separate difierent sizes ofstone, coal, coke, sand or gravel fed thereto and to place the same insuitable storage receptacles.

A further object of the invention is to provide a machine of thecharacter set forth which shall be simple to operate, cheap tomanufacture and economical.

A still further object of this invention is to provide a gravelscreening device with means for separating the sand from the gravel andconveying the same to suitable storage receptacles.

With the above and other objects in view as will hereinafter appear,this invention consists in the peculiar arrangement and combination ofvarious related elements of the gravel separating machine as will behereinafter described and more particularly set forth in the appendedclaims.

Referring to the accompanying drawings forming a portion of thisspecification and in which similar reference characters indicate similarparts wherever used: Figure 1 is a top plan view of a machineconstructed in accordance with the preferred embodiment of thisinvention; Fig. 2 is a side elevation partly in section; and Fig. 3 isan end View partly in section.

The numeral 4 designates a framework preferably rectangular and forminga chamber or bin 5. Extending across the top of the bin 5 is a crossmember 6 sup-- ported at its outer end by a bracket 7 and carryingtransverse members 8 and 9 upon which are uprights 10 and 11 supportingby means of cross bars 12 and 13 a rela tively large hopper 11 adaptedto be fed with water by means of a pipe 15 connected with any suitableoutside source. Extending from the hopper is a discharge pipe 16,extending downwardly at an angle below the horizontal. I

Specification of Letters Patent.

Patented June 1, 1915. Serial No. 3,508.

Mounted upon uprights 17 and 18 and adapted to revolve in bearings 19and 20 is a shaft 21 having a collar 22 keyed thereto and provided witha flanged extension 23. Supported by the flanged collar 23 and eX-tending upwardly to cover the discharge end of the spout 16 is afrusto-conical screen 21 composed of wire cloth, perforated metal, orother suitable material of relatively large mesh adapted to be heldrigid by means of a, metal hoop 25 at the outer end thereof.

Carried upon the outer periphery of the flange 23 are angle irons 26 and27, supporting a frusto-conical screen 28 composed of wire cloth,perforated metal, or other suitable material, the mesh of which isslightly smaller than that of the material of the screen 24. The screen28 surrounds the screen 24 and the screen 28 is closed at the endnearest the hopper by the flare of the screen 24. A metal band 29 servesto hold the screen 28 rigid. Extending from the band 29 is a thirdscreen 30 composed of very fine wire, perforated metal, or othersuitable mesh material. This screen is supported by means of angle irons31 and 32 and is held by means of an outer hoop 33. For the purpose offacilitating these screening operations solid sheets 25 of metal orother materials in the shape of a skirt or frustum of a cone areattached to the respective screens, so that all material passing throughsaid screen sections where they are surrounded by this blank skirt orblank frusto-conical section, is caught by said blank section andcarried to the rear or small end of each screen section, thereby causingall material which passes screen section 21 to pass over more of thefull length of screen section 28 from the fact that it is deposited atthe rear or small, closed end section 28. Also all material passedthrough screen section 28 where it is surrounded by the second blankskirt or blank frusto-conical section 25 is caught by said second blanksection and carried to the rear or small end of screen section 30,thereby causing all material which passes screen section 28 to pass.over more of the full length of screen section 30. The skirt of metal25", frusto-conical in shape and of about the same degree of flare asscreen section 24;, is fastened on top of screen 241, where said section24 fastens onto flanged collar 23. This skirt section incloses scr ensec ion 21 and s 1e and 27 are then placed ing asuitable distance 30 40each end of the screen section 20 blank.

21 by 50 ing a wheel 35 on the shaft 21 and a wheel circles the placewhere screen section 24 fastens onto flanged collar 23. This solid skirtextends from this point of support about two-thirds way to the frontedge of screen section 24. The angle iron supports 26 between this solidsection and the screen section 28 and the bolts passing through theangle iron, blank skirt section, screen section 24 and flanged collar23, hold all of them in place. The

second blank skirt 25 is attached to the screen section 28, and is madeslightly larger in diameter, so that it is away from the outer surfacethereof. This second blank sklrt is retained in this position by thesame method of fastening as was above described,

and extends from this point to about :fi-rds of the'way to large end ofscreen section 28. The angle irons 31 and 32 are then placed betweenthis solid section and screen sec tion 30. On screen section 24, theperforations or mesh openings begin at inner edge of the flanged collarand extend to within a suitable distance from the edge of the open endof the screen section 24, leaving a suitable distance 24 of the edgeblank on the open or large end. On screen section 28 the perforations ormesh openings extend to within a suitable distance from the two edges,leaving a suitable distance 28 of the 35 twoedges on each end of thescreen section 28 blank. On screen section 30, the perforation or meshopening extends to within a suitable distance from the two edges, leavoftwo edges on The blank edges on the screen section are for the purposeof bolting or fastening the screen sections together and also for providing an extension or lip, so that the screened material will bedelivered clear and not interfere with the material which passes eachscreen section.

Rotary movement is imparted to the shaft means of a sprocket chain 34engag- 36 upon a shaft 37 journaled in suitable bearings 38 and 39 andhaving a wheel 40 which is in turn driven by means of a sprocket chain41, driven by a wheel 42 upon a shaft 43 journaled in suitable bearings44 and 45. Upon the shaft 43 is a fly wheel 46 driven by a belt 47 froman electric or other motor 48 of any suitable type which is locatedoutside of the bin 5 and inclosed by means of a casing 49. V Directlybeneath the open end of the screen 24 and in communication with a bin 51is adownwardly extending spout 50. In communication with the open endofthe frusto-conical screen 28 e-fi-is a secondtrough 52 incommunication with a third bin 53 and provided beneath the open end ofthe screen 30 is a deflector plate 54 adapted to guide the materialissuing from the mouth of the screen 28 into the bin 5 above mentioned.

Below the screen 30 is a U-shaped member 55 preferably formed of sheetmetal and sloping downwardly away from the direction of discharge of thescreen 30. Below the discharge end of the member 55 is provided a hopper56 pivotally mounted upon a shaft 57 and adapted to be oscillated in anysuitable manner. At the lower end of the hopper 56 are provided twoopenings 58 which empty into a trough 59 which may be placed incommunication with any suitable bin or storage receptacle. Two buifersfor the hopper 56 are provided at the lower end thereof and comprise aleaf spring 60 secured to the side of the bin 5 and carrying a buiferplate 61 adapted to be engaged by the lower edge 62 of the hopper 56,thus permitting the sand which settles to the bottom of hopper 56 toooze out of and between 58 and 61. This spring buffer also preventshopper 56 during its oscillatory movement from striking the side of thebin 5. The hopper 56 is provided at its upper end with a spout 63adapted to discharge the waste water in the hopper into a pipe 64provided therefor.

The operation is as follows: The material to be screened is dumped intothe hopper 14 where it is wet by means of water from the pipe 15, asabove explained, and a rotary motion given to the shaft 21 which causesthe three screens mounted upon the flanged collar 22 to revolve. Thematerial from the hopper 14 passes downwardly through the spout 16 andinto the initial screen 24 whereupon all material smaller than the meshof the screen 24 will pass therethrough and into the second screen 28,the oversized material running out of the open end of the screen 24 andonto the chute 54 and into the bin communicating therewith. The materialwhich has been screened through the screen 24 passes into the screen 28as above stated and is there screened by the screen 28, the smallermaterial passing therethrough and into the third screen 30 and theoversized material running out of the open end of the screen 28 and intothe conveyer trough 52 and the bin in communication therewith. Thematerial which has been screened through the screen 28 is furtherscreened by the screen 30, the very fine particles of material whichfall through the screen 30 falling onto the U-shaped member 55 and theoversized material running out of the open end of the screen 30 where,by means of the deflector plate 54, it is guided into the bin 5; Thevery fine material which rests upon the plate 55 runs down into thehopper 56 from which it is fed by means of the oscillatory movementthereof out of the hopper and into the trough 59 to any suitablereceptacle.

I realize that considerable variation of the details of my invention maybe resorted to without departing from the spirit thereof, and it is notmy intention to limit myself to the specific details herein shown anddescribed, but to construe the claims as broadly as the state of theprior art will permit.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a screening machine, the combination with a framework, of a shaftmounted thereon, a collar on said shaft, a screen mounted on saidcollar, a skirt for said screen, a second screen carried by said firstmentioned screen and said collar, a skirt for said second screen and athird screen carried by said second screen and its skirt.

2. In a screening machine, the combination with a shaft, of a flangedcollar thereon, an outwardly flaring screen mounted thereon, animperforate skirting inclosing a portion of the inner end ofthe screenand supported by the collar, a second inwardly flaring screen mountedupon said first mentioned screen, a plurality of brackets between saidsecond mentioned screen and said collar, an imperforate skirting mountedupon said second mentioned screen and in closing a portion of the innerend thereof, a third outwardly flaring screen mounted upon said secondmentioned screen and a plurality of brackets carried by said secondmentioned skirting adapted to support said third screen.

3. In a screening machine, the combination with a shaft, of a collarmounted thereon, an outwardly flaring frusto-conical screen mounted uponsaid collar, a hopper provided with a spout adapted to discharge intothe interior of said screen, a trough adapted to receive the materialdischarged from said screen, an inwardly flaring frustoconical screenmounted upon said first mentioned screen, a plurality of bracketscarried by said collar adapted to support said second mentioned screen,means adapted to receive material discharged from said screen, anoutwardly flaring screen supported by said second mentioned screen,means Copies of this patent may be obtained for five cents each, byaddressing the adapted to receive the material discharged from saidthird mentioned screen and means adapted to receive material sifted bysaid third mentioned screen.

4. In a screening machine, the combina tion with a shaft provided with acollar, of an outwardly flaring frusto-conical screen mounted thereon, asecond inwardly flaring frusto-conical screen mounted upon said firstmentioned screen, a frusto-conical imperforate skirting carried by saidfirst mentioned screen adapted to convey material sifted therethrough tosaid second mentioned screen, a plurality of brackets between saidcollar and said second mentioned screen, a third screen supported bysaid second mentioned screen, an imperforate frusto-conical skirtingcarried by said second mentioned screen adapted to feed material siftedtherethrough to said third mentioned screen, a plurality of bracketsbetween said skirting and said third mentioned screen adapted to supportthe same and means adapted to supply material to said screens.

5. In a screening machine, the combination with a framework, of aplurality of standards mounted thereon, a shaft carried by saidstandard, a flanged collar on said shaft, an outwardly flaringfrusto-conical screen mounted on said collar, a hopper provided with aspout discharging into said screen, a frusto-conical imperforateskirting carried by said collar and adapted to inclose a portion of theinner end of said screen whereby to collect and convey mate rialdischarged therethrough, an inwardly flaring conical screen mounted uponsaid first mentioned screen, a plurality of brackets carried by saidcollar adapted to support said second mentioned screen, an inwardlyflaring imperforate frusto-conical skirting supported by said secondmentioned screen, a third screen mounted upon said second mentionedscreen and said second mentioned skirting and independent means forconveying and storing material sifted by each of said screens.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES P. BIESANZ.

Witnesses:

NANNETA STARK, W. J. SMITH.

Commissioner of Patents,

Washington, D. G.

